xenoprofile: Disable IBS on x86_32

Extended PCI configuration space is not accessible on 32 bit
systems. This patch disables IBS feature on 32 bit to avoid
IBSCTL(0x1cc) accesses.

Signed-off-by: Wei Wang <wei.wang2@amd.com>

diff --git a/xen/arch/x86/oprofile/op_model_athlon.c b/xen/arch/x86/oprofile/op_model_athlon.c
index d1158499306ac8ca4ea0a733bb92d69349983f34..8d83b01e3194c9bd03876e613ca8ab968a50ac20 100644 (file)
--- a/xen/arch/x86/oprofile/op_model_athlon.c
+++ b/xen/arch/x86/oprofile/op_model_athlon.c
@@ -475,6 +475,9 @@ static int init_ibs_nmi(void)
 
 static u32 get_ibs_caps(void)
 {
+#ifdef CONFIG_X86_32
+       return 0;
+#else
        unsigned int max_level;
 
        if (!boot_cpu_has(X86_FEATURE_IBS))
@@ -491,6 +494,7 @@ static u32 get_ibs_caps(void)
                return IBS_CAPS_AVAIL;
 
        return ibs_caps;
+#endif
 }
 
 u32 ibs_init(void)